/Engine/Plugins/Experimental/Mutable/Source/CustomizableObject/Public/MuCO/CustomizableObjectInstanceDescriptor.h
Remove the RangeIndex element of the texture range of values from the parameter ParamName, returns the index of the last valid float, -1 if no values left.
int32 RemoveValueFromTextureRange ( const [FString](API\Runtime\Core\Containers\FString) & ParamName, int32 RangeIndex )